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The term phrase structure grammar was originally introduced by
Noam Chomsky Avram Noam Chomsky (born December 7, 1928) is an American professor and public intellectual known for his work in linguistics, political activism, and social criticism. Sometimes called "the father of modern linguistics", Chomsky is also a ...
as the term for
grammar In linguistics, grammar is the set of rules for how a natural language is structured, as demonstrated by its speakers or writers. Grammar rules may concern the use of clauses, phrases, and words. The term may also refer to the study of such rul ...
studied previously by
Emil Post Emil Leon Post (; February 11, 1897 – April 21, 1954) was an American mathematician and logician. He is best known for his work in the field that eventually became known as computability theory. Life Post was born in Augustów, Suwałki Govern ...
and Axel Thue ( Post canonical systems). Some authors, however, reserve the term for more restricted grammars in the Chomsky hierarchy: context-sensitive grammars or context-free grammars. In a broader sense, phrase structure grammars are also known as ''constituency grammars''. The defining character of phrase structure grammars is thus their adherence to the constituency relation, as opposed to the dependency relation of dependency grammars.


History

In 1956, Chomsky wrote, "A phrase-structure grammar is defined by a finite vocabulary (alphabet) Vp, and a finite set Σ of initial strings in Vp, and a finite set F of rules of the form: X → Y, where X and Y are strings in Vp."


Constituency relation

In
linguistics Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), Morphology (linguistics), morphology (structure of words), phonetics (speech sounds ...
, phrase structure grammars are all those grammars that are based on the constituency relation, as opposed to the dependency relation associated with dependency grammars; hence, phrase structure grammars are also known as constituency grammars.Matthews (1981:71ff.) provides an insightful discussion of the distinction between constituency- and dependency-based grammars. See also Allerton (1979:238f.), McCawley (1988:13), Mel'cuk (1988:12-14), Borsley (1991:30f.), Sag and Wasow (1999:421f.), van Valin (2001:86ff.). Any of several related theories for the parsing of natural language qualify as constituency grammars, and most of them have been developed from Chomsky's work, including * Government and binding theory * Generalized phrase structure grammar *
Head-driven phrase structure grammar Head-driven phrase structure grammar (HPSG) is a highly lexicalized, constraint-based grammar developed by Carl Pollard and Ivan Sag. It is a type of phrase structure grammar, as opposed to a dependency grammar, and it is the immediate successor t ...
* Lexical functional grammar * The minimalist program * Nanosyntax Further grammar frameworks and formalisms also qualify as constituency-based, although they may not think of themselves as having spawned from Chomsky's work, e.g. * Arc pair grammar, and * Categorial grammar.


See also

* Catena


Notes


References

*Allerton, D. 1979. Essentials of grammatical theory. London: Routledge & Kegan Paul. *Borsley, R. 1991
Syntactic theory: A unified approach
London: Edward Arnold. *Chomsky, Noam 1957. Syntactic structures. The Hague/Paris: Mouton. *Matthews, P. Syntax. 1981. Cambridge, UK: Cambridge University Press, . *McCawley, T. 1988. The syntactic phenomena of English, Vol. 1. Chicago: The University of Chicago Press. *Mel'cuk, I. 1988
Dependency syntax: Theory and practice
Albany: SUNY Press. * Sag, I. and T. Wasow. 1999. Syntactic theory: A formal introduction. Stanford, CA: CSLI Publications. *Tesnière, Lucien 1959. Éleménts de syntaxe structurale. Paris: Klincksieck. *van Valin, R. 2001. An introduction to syntax. Cambridge, UK: Cambridge University Press. {{div col end Generative syntax Syntax Noam Chomsky Natural language processing